真孕受体用于金黄仓鼠胚胎移植的方法建立与优化
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南京医科大学医药实验动物中心

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江苏省实验动物协会科研项目(DWXH202303);江苏省卫健委医学科研项目(Z2023003);国家重点研发计划(2021YFF070250)。


Establishment and optimization of a method for transferring golden hamster embryos using true pregnancy receptors
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Animal Core Facility of Nanjing Medical University

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    摘要:

    目的 优化金黄仓鼠胚胎移植技术,探索金黄仓鼠真孕受体最佳移植胚胎数目及发育时期。方法 建立真孕白化金黄仓鼠种群作为胚胎移植受体,比较胚胎发育期、受体减胚及二次移植受体对产仔率、供胚得仔率及后代存活率的影响,确定真孕受体最佳胚胎移植枚数及移植方法。结果 相对于野生型金黄仓鼠作为移植受体,真孕白化受体可快速判定子代来源,并适用于多种以胚胎移植为基础的生殖类实验方案,采用受精卵或二细胞胚胎对移植效果无显著影响(P>0.05);减胚组能显著提高供胚得仔率(22%,P<0.05),二次移植受体的未孕率显著提高(42%,P<0.01);移植6-10枚胚胎的供胚得仔率最高(27%,P<0.01),存活率正常(89%)。结论 6-10枚供体胚胎有助于提高供胚得仔率和存活率,基于白化真孕受体的胚胎移植方法,为金黄仓鼠的应用与开发提供了技术支撑。

    Abstract:

    Objective By optimizing the technical parameters of golden hamster embryo transfer, explore the optimal number and developmental period of transplanted embryos for golden hamster true pregnancy recipients. Methods By establishing a population of true pregnant albino golden hamsters as embryo transfer recipients, the effects of different embryonic development stages, recipient embryo reduction, and secondary transfer recipients on litter yield, donor embryo yield, and offspring survival rate were compared. Results Compared to wild-type golden hamsters as transplant recipients, true pregnancy albino receptors can quickly determine the origin of offspring and are suitable for various reproductive experimental programs based on embryo transfer. Fertilized eggs or two cell embryos have no significant impact on the transfer effect (P>0.05); The rate of donor embryos in the recipient embryo reduction group was significantly increased (22%, P<0.05), and the lower total number of births resulted in a significant decrease in cage survival rate (56%, P<0.01). The second transfer recipient"s non pregnancy rate was significantly increased (42%, P<0.01); The highest embryo yield rate (27%, P<0.01) and normal survival rate (89%) were observed in the transfer of 6-10 embryos. Conclusion The transfer of 6-10 donor embryos can help improve the yield and survival rate of donor embryos, We have successfully established an embryo transfer method using albino pregnant golden hamsters as recipients, providing technical support for the application and development of gene modification models in golden hamsters.

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  • 收稿日期:2024-04-11
  • 最后修改日期:2024-06-24
  • 录用日期:2024-09-30
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